funduffer wrote:BullDog wrote:funduffer wrote:BullDog wrote:Stompa wrote:But doesn't that give the consumption for the entire house? Are you just measuring the consumption with the washing machine on, then subtracting the consumption (for a similar period of time) with the washing machine off?
Between 00.30 and 04.30am there's the selected appliance and the fridge + freezer. We can see the consumption over night and we can see for each 30 minute time slot what the draw is on the meter. So, overnight we can see when the washing machine turns on and off and we know from previous nights when only the fridge + freezer were running what to allow for them. So, it's not like a performance test that you'd run for a contractual requirement! But for understanding domestic power and cost, I think it's enough to persuade us that running the white goods on the delay start timer is worth the inconvenience.
It might be enlightening if other members here could post their findings from running their appliances and see what they find. FWIW, the three white goods, washing machine, dishwasher and heat pump drier are all modern appliances made by Miele. How Miele stacks up against other brands energy consumption I have no idea.
Hi bulldog, we also have the Octopus EV tariff from Sept 2021 (15p daytime, 5p between 00:30 and 04:30). We have also started running the dishwasher, breadmaker and washer in the overnight cheap period (as well as charging the EV when we need to). It is a great tariff, and hats off to Octopus for getting this working, provided of course you have a working SMETS2 smart meter.
I must admit your usage from the dishwasher/washer does look high. We have relatively new white goods, a Bosch dishwasher and a Miele washer. Compared to nights when we run nothing we only add 2kWh or so when we run a couple of these appliances. We do use the Eco cycles, which may make a difference.
The car charging is wonderful. You can add >100miles range in the 4 hour period overnight equivalent to about 1.25p a mile, which is incredible. A petrol/diesel car running at 50mpg and paying £2/l for fuel would be paying 18p a mile or so. It meets all our local motoring needs, without much daytime charging. We have solar panels as well, and export maybe 2/3 of our output and currently receive 4p per kWh for this from an OVO SEG. I like to think we are selling power to the grid in the summer/daytime for 4p, and buying it back overnight at 5p. So really the power at night is only costing us 1p per kWh. This would be 0.25p a mile for the EV!
It will be interesting to see how these sort of tariffs evolve as EV usage builds up, and competition increases.
FD
Thanks. I am doubtful about the accuracy of the wireless monitor that is fed remotely from the smart meter. I think it's just indicative rather than accurate. Presumably, the actual meter itself is accurate and that's what gets fed to the supplier.
Bulldog, you can cross check it against the actually usage shown in your Octopus bill. If you open the bill and scroll down you should see all the half hourly usage data. This is the data Octopus have read directly from your meter.
Thanks for that. We're just waiting to migrate across to Octopus soon. That's useful to know.